Heavy-duty container for bulk material



Feb. 16, 1960 c. D. FALLERT 2,925,210

HEAVY-DUTY CONTAINER FOR BULK MATERIAL Filed Oct. 8, 1956 5 Sheets-Sheet l Feb. 16, 1960 c. D. FALLERT HEAVY-DUTY CONTAINER FOR BULK MATERIAL 3 Sheets-Sheet 2 Filed Oct. 8, 1956 Feb. 16, 1960 c. D. FALLERT HEAVY-DUTY CONTAINER FOR BULK MATERIAL Filed 001:. 8, 1956 3 Sheets-Sheet 3 F GJ3 2/ FIGJI United States Patent i HEAVY-DUTY CONTAINER FOR-BULK MATERIAL Application October 8, .1956rSerial No. 614,731

1 Claim. crass- 23) This invention relates to heavy-duty containers for packing, .shipping and storing bulk commodities which require positive protection from sifting and leakage and :from contamination. Containers employing this inventron maybe constructed of solid fibreboard, corrugated .fibreboard or any other suitable material.

' Inuthe Patent No. 2,762,551, entitled Heavy-Duty *(iontainer for Bulk Material, issued September 11, 1956, to Clifford D. Fallert, thereis disclosed a heavy-duty paperboard container for packing, shipping and storing large quantities of bulk commodities, for example from about 500 to 2000 or more pounds. Paperboard con- -tatners, such .as that disclosed inthe above identified patent, are. nowbeing used quite extensively and have ,proved to be quite satisfactory. 7

My invention is in the nature of an improvement of .the container in the above identified patent and is directed to :relatively smaller quantities of bulk materials, for Leqtanr ple, lPto approximately five-hundred pounds of iree flowing bulk commodities, i.e., bulk commodities in .g172 n 11.1 l ar, pellet or powder form and often range in size upto approximately 24''x 24'' x 30". ,lgulk commodities hereinbefore mentioned stantial outward force on the walls and bottom structure of the container. Consequently, it is unexpected .that containers constructed of relatively light, foldable .rnaterial, such a fibreboard and the like and without the "use ofhexteriorsteel straps can be used successfully for the purposes described.

-Mgany of the bulk materials, for example, flour, chemicals; in pellet and powderform, grain and the like, have .heretoliore been shipped in non-collapsible cylindrical Free flowing exert a subfibre-board or metallic drumsusually having a maxi-' mum capacity of from 50 to 300 pounds depending on hedensity of the commodity. Containers employing the gsubject invention may be pre-assembled and shipped knQcked-do-wn to the user which results in substantial economies. The containers may be, and usually are, palletizedso that they may be stacked two, three or even four high. Furthermore, shipping and storing space is saved and stacking ease facilitated as a result of their reqtangular configuration. Other economies have resulted from-their use.

More specifically, the container comprises a bottom tray with either continuous walls integral with a flat bot- ,tom. panel, .or an open-ended tube with bottom closure 'flaps, a top closure cap constructed like either typeof "bottom tray, the inner and outer faces of the'upstanding "bottom tray walls being firmly teleseoped between lower .end portions of inner and outer, open-ended, tubular sleeves, the bottom edges of the inner sleeve being in abutting relation with the inner face of the bottom panel- -of-,the, t ray.; A bottom pad may be placed inside the inner .sleeveand, rests on the inner face of. the bottom tray, 1116; edges. ef Lsaid optional bottom pad being in abutting relatiqn with, the; inner sleeve, and the bottom edge, of the. outer sleeve being in .substantiallycoplanar. relationthe outer faceof the bottom panel.

The outer sleeve terminates at its upper end a distance Pat nted Feb- 6 39.

ice

below the top of the inner sleeve wall panels substantially equal to the height ,ofgthe top cap walls. The inner sleeve has integralflaps on'the upper ends of each wall panel, each flap being coextensive with the width of the wall panel and being'gi-eatei" in length than the height of the .top cap. walls. The inner sleeve wall flaps may be folded outward and downwardly and affixed to the wall of the inner .sleeve'in anysuitable manner before positioning the .o efsleeve over theinner sleeve, but preferably the inner sleeve w t naps are scoredlongitudinally at aboutrhalf 'their widthsd that ,after the outer sleeve is telescoped andproperlyfpositionedover the inner sleeve, the described. inner sleeve .fiaps" may be angularly folded about" their longitudinal scares and their" readily folded downwardly in H twist: relation between the inner and outer sleeves.

The top closure cap is then telescoped over the folded inner sleeve flaps ,in ,frictionally engaging, contacting relation with the inner sleeve flaps and "with the lower edges of the depending ,tqp'cap wall "flanges resting on the upper edge of theouter.liner,or sleeve. An object of this invention is to provide an inexpensive,

sift-proof and contamination-proofrigid rectangular container for quantities of bulk Ifiaterialjupto approximately 500 pounds which will providepositive protection from contamination by extraneous frnatte'r fdui'ing' transportation and storage withoutuse of exterior steel strapping.

A further object is to provide a container with flaps on theupper ends of the inner litter 'or sleeve and an outer liner or sleeve foffreduce'dheight, so that the 'flaps are insertable between thesleeves byjscoring'the flaps at about midway their height." The purpose being to maintain the sleeves inparallfel relation; thereby preventing undesirable horizontal move ent between the sleeves and to prevent the packaged materialfromcoming into co ntact with free endedges of paperboardmaterial;

A further object is to provide'si'ft-proof containers which may vary in size, for example, up t'o approximately 24" x 24" x.30" or similar dimensions for shipping a wide variety of bulk commpdities'.

These and other objects and advantages of the invention will be apparent to those skilled in'the an upon a full and complete. understanding of s the construction and operation of the device ashereinaftersetfforth.

The invention consists in the parts, arrangement and combination of parts hereinafter described and claimed. The accompanying drawings form'a part of this specification and like numerals andsymbols, therein appearing refer to like parts wherever they occur.

Fig. l is a plan view of the component parts of the container embodying the preferred" form of the invention;

Fig. 2 is a perspective view of a container top closure cap member shown in a partially erectedcondition;

Fig. 3 is a perspective view of thecontainer top closure cap shown in Fig. 2 shown in a completely erected condition; i i

Fig. 4 is a perspective view of the inner liner or sleeve in completely erec'tedcondition; i

Fig. 5 is a perspective view of the outer liner or sleeve in completely erected condition; M

Fig 6 is a perspective view of the; preferred container bottom tray shown in a completely erectedcondition;

Fig. 7 is a perspective view of'the pre assembled component parts of the container in knockd down condition embodying the preferred form or theinvention;

Fig. 8 is a perspective view of rheitiner liner or sleeve telescoped into the bottom tray and' the optional bottom pad being positioned downwardly inside the 'innerliner or sleeve;

Fig. 9 is. a perspective view oftheoutside. liner or sleeve telescoped over the inside liner and bottom tray;

about midway their height;

Fig. is a perspective view of the inner liner or sleeve flaps in the preferredform being folded downwardly and inside the outer liner about the horizontal score positioned Fig. 1.1 is a' persp ective view showing theflaps of the inner. liner o'r sleevecompletely positioned inside the outer liner or sleeve; 1

Fig. 12 is a perspective view of the container com- I pletely assembled; v a g V Fig. 13 is a sectional 'viewof the assembled box taken along lines 134-13 in Fig. 12; and I Fig. 14 is-a sectional view showingthe alternate bottom tray constructed like the top closure cap 20.

, condition. y

The inner liner or sleeve 27, shown in Fig. l, is provided with four'side panels'28 defined by three score lines 29 and score line 30 which also define in part the hinge connection of the'upper flaps 31. Side slots 32 define the side margins of the upper flaps 31. Score lines 33 are positioned, in the' preferred form of the invention, midway the'heights'of the upper flaps 31.

The outer liner o'r sleeve 34, shown in Fig. 1, is provided with four side panels 35 defined by three score lines 36.

The optional bottom pad 37 is shown in Fig. l.

. The bottom tray 38, shown in Fig. l, is provided with four side panels '39 defined by three score lines 40 and score line 41 which also define in part the hinge connection of the bottom closure flaps 42. Side slots 43 define the side margins of the bottom closure flaps 42.

The top closure cap 20 may be erected in any desired manner, however, a preferred method of erecting the blank is to affix staples 44 through the triangular flaps 23 and wall panels 24 which are in juxtaposed relation as shown in Fig. 2.

A preferred method of erecting the inner liner or sleeve blank 27 is to aflix a tape 45 to the outside of the two free edges of the side panels 28, as shown in Fig. 4.

A preferred method of erecting the outer liner or sleeve blank 34 is to afiix a tape 46 to the outside of the two free edges of the side panels 35, as shown in Fig. 5. The bottom tray 38 may be erected in any desired manner, however, a preferred method of erecting the blank is to fold the side panels 39 right angularly about the score lines 40 aflixing a tape 47 to the outside of the two free side edges of the side panels 39. The bottom closure flaps 42 are folded up and adhe'sively secured together in any suitable manner, as shown in Fig. 6.

Each of the pre-assembled component parts of the container may be collapsed for economical shipment to the user, as shown in Fig. 7

' The optional bottom pad 37 is being positioned inside the inner liner or sleeve 27 which has been telescoped inside the bottom tray 38, as shown in Fig. 8.

Q 'The top closure cap 20,shown inFig. 1, is provided I The outer liner-or sleeve 34 is telescoped over both the inner liner or sleeve 27 and the bottom tray 38, as shown in-Fige 9. v

The upper flaps -31 of the inner liner on sleeve 27 are folded down about score lines 30 and are folded into an L-shape about the score lines 33 with their free end edges resting on the upperend of the outer liner or sleeve 34. The flaps 31 can then be readily forced downwardly into fiatwise relation between the inner liner or sleeve 27 and the outer liner or sleeve'34, to prevent undesirable horizontal movement and removing free end edges'of paperboard vfrom the containers interior surface thereby providing positive protection of contents from sifting and desired manner, however, a preferred method isto set up the container on any type of pallet or skid for handling ease. The bottom tray 38, in its erected condition, is then placed on the upper face of such skid. The inner liner or sleeve 27- is t'elesc'opedinside the bottom tray. The optional bottom pad'37 may then be placed inside the inner liner or sleeve 27 resting on the upper face of .the bottom tray. closure flaps 42. The outer linerzor sleeve 34 istelescoped outside both the inner. lineror sleeve 27 and the bottom tray 38 withits lower free end edges coplanar with the bottom face of the tray.

The upper flaps 31 of the inner liner or sleeve are then folded down between the inner liner or sleeve 27 and the outer liner or sleeve 34 as hereinbefore described to maintain the sleeves in parallel relation thereby preventing undesirable horizontal movement and to prevent the packaged materialfrom sifting and coming into contact with free end edges of paperboard material. vThe container may then be filled with bulk material'in granular, pellet or powder form and the top closure cap '20 telescoped over the inner liner or sleeve flaps 31 with the inner marginal edge portions of the fiat top panel 21 resting on the broad smooth upper edge fold 30' of the inner sleeve, completing the set up of-the container.

It is to be understood that the embodiments herein described are illustrative and not restrictive, and it is also to be understood that the invention may be susceptible of embodiment in other modified forms, and that all such modifications which are similar or equivalent hereto come equally within the scope of the claim next appearing.

What I claim is: Y

A collapsible sift-proof rectangular paper board container free of external projections for storing and shipping materials in powder, pellet, granular and other flowable forms wherein said materials are effectively protected from contamination by contact with exposed raw edges of pa er board, said container comprising a bottom tray including in-folded bottom closure flaps and upstanding side panels extending substantially normally to said bottom closure flaps, an inner sleeve including a plurality of side walls, said side walls being in abutting relationship with the inner faces of adjacent side panels of the bottom tray, the lower free end edges of the inner sleeve being in abutment with inner surfaces of the bottom closure flaps of the bottom tray, an outer sleeve disposed in telescoping relationship with said inner sleeve, said outer sleeve having a plurality of side walls, said side walls being in abutting relationship with the outer surfaces of the adjacent side panels of the bottom tray,

,the lower free end edges of the outer sleeve being in coplanar relationship to outer surfaces of the bottom sleeve and the inner surface of the associated wallof the outer sleeve, and a top closure cap, said top closu're cap including a top panel and depending wall flanges formed integral therewith, said top closure capbein'g telescoped over said inner sleeve flaps such that the free end edges of said wall flanges of the top closure cap are in abutment with the free upper edges of the outer sleeve, the inner faces of said wall flanges of the top closure cap being in abutment with the outer faces of the adjacent flaps, and the folds formed by the flaps at the top of the inner sleeve being in abutment with the inner face of the top panel of the top closure cap.

1,794,821 Andrews Mar. 3, 1931 8 Ferguson June 13, 1944 Tibbetts Jan. 30, 1945 Gazette Sept. 3, 1946 George Sept. 23, 1952 Gibbons Apr. 20, 1954 Fallert Sept. 11, 1956 Hickin Aug. 12, 1958 

